Law of Superposition

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in any undisturbed sequence of rocks, the oldest layers are at the bottom and the youngest layers are at the top.

Tags

NGSS.MS-ESS1-4

Front

What does the Law of Superposition help geologists determine?

Back

It helps geologists determine the relative ages of rock layers and the fossils within them.

Tags

NGSS.MS-ESS1-4

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism, often found in sedimentary rock.

Tags

NGSS.MS-LS4-1

Front

Why is the Law of Superposition important in geology?

Back

It is important because it provides a method for understanding the chronological sequence of geological events.

Tags

NGSS.MS-ESS1-4

Front

What type of rock is most commonly associated with fossils?

Back

Sedimentary rock is most commonly associated with fossils.

Tags

NGSS.MS-ESS2-3

Front

What is an example of evidence that supports the theory of continental drift?

Back

Fossils of the same species found on different continents, such as the Mesosaurus, support the theory of continental drift.

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Front

What is the significance of glacier scars in understanding Earth's history?

Back

Glacier scars indicate past glacial activity and can show that continents were once in different climatic zones.

Tags

NGSS.MS-ESS2-2

Front

What is relative dating in geology?

Back

Relative dating is the method of determining the age of rocks and fossils in relation to one another, without determining their exact age.

Tags

NGSS.MS-ESS1-4

Front

What is an unconformity in geology?

Back

An unconformity is a surface that represents a gap in the geological record, where rock layers have been eroded or not deposited.

Tags

NGSS.MS-ESS1-4

Front

What is the principle of original horizontality?

Back

The principle of original horizontality states that layers of sediment are originally deposited horizontally under the action of gravity.